32020120320 has 144 divisors (see below), whose sum is σ = 105790980960. Its totient is φ = 8244232192.

The previous prime is 32020120303. The next prime is 32020120333. The reversal of 32020120320 is 2302102023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 32020120320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32409 + ... + 255128.

It is an arithmetic number, because the mean of its divisors is an integer number (734659590).

Almost surely, 2^32020120320 is an apocalyptic number.

32020120320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32020120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52895490480).

32020120320 is an abundant number, since it is smaller than the sum of its proper divisors (73770860640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32020120320 is a wasteful number, since it uses less digits than its factorization.

32020120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287590 (or 287576 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 32020120320 its reverse (2302102023), we get a palindrome (34322222343).

The spelling of 32020120320 in words is "thirty-two billion, twenty million, one hundred twenty thousand, three hundred twenty".